Collect and feed your cup of sourdough starter and leave for 1-2 hours.
Preheat oven to 350℉ / 180℃
In a large mixing bowl, mash bananas with a fork.
Add cinnamon, oil, and honey.
Add sourdough starter and stir to combine.
In a separate bowl combine flours and baking powder.
Add the dry ingredients to the banana/sourdough starter mixture.
Mix to combine.
Spoon mixture into 12 muffin cups.
Bake for 12-14 minutes until cooked.
Cool on a cooling rack or enjoy straight from the oven.